Annealing machine



March 29, 1949. c, CAMPIQN, 5 2,465,511

ANNEALING MACHINE Filed May :5, 1946 INVENTOR Dana/0'6. ("am ion, BYMJMMM {QM/J,

ATTORNEYS.

Patented Mar. 29, 1949 ANNEALING MACHINE Donald C. Campion, Sr.,Detroit, Mich., assignor to Loftus Engineering Corporation, Pittsburgh,Pa., a corporation of Maryland Application May 3, 1946, Serial No.667,001

12 Claims.

This invention relates to an annealing machine and more particularly toan annealing machine for discs such as automotive wheel discs.

It is an object of this invention to produce a machine for annealingmetal objects, such as disc wheels, which is simple in form, efiicientin operation and which provides facile and expeditious handling of thework.

Fig. 1 is a vertical section through my machine.

Figs. 2 and 3 are sections along the lines 22 and 3-3 of Fig. 1.

Referring more particularly to the drawing, it will be seen that mydevice comprises a gas mixer I in which a charge of combustible gas,such as manufactured or natural gas, is mixed with air. The gas mixer l,of course, is connected with a source of combustible gas and mixes thisgas with air in the proper proportions to support eflicient combustion.The gaseous charge is conducted through pipe 2 and conduit 3 to outlet 4in work support table 5. Outlet 4 is provided with a circumferentialflange 6 which acts as a center for the disc wheels, generallydesignated 1, which are being annealed. Each disc wheel has a centralopening 9.

My annealing machine utilizes a plurality of disc burners, generallydesignated 10, and each comprising a hub II and a flange 12. The discflange I2 is hollow to provide a gas chamber I3 and is provided with aplurality of jets or orifices [4 around its circumference through whichthe gas mixture flows and burns. The diameter of burner I is less thanthat of the wheel I.

In utilizing my machine a plurality of burners and wheel discs arestacked in alternate relation one upon the other so that the burner hubsare in axial alignment and cooperate to provide a passageway I throughwhich the gaseous mixture from outlet 4 flows to each of the burners I.The disc burners and wheels are held in stack arrangement by a tie-downrod 16 which passes through an opening in table 5 centrally of outlet 4and upwardly through the passageway I5. The upper end of rod 16 isthreaded and a closure clamp I8 is screwed on to the upper end of rod l6and turned down tightly so that closure l1 closes the upper end ofpassageway I5 and holds the burner hubs in substantially gas-tightjunction one upon the other.

The gas now flows from conduit 3 through passageway l5 and thenoutwardly through chambers 13 and nozzles I4 in each of the discburners. It will be seen that the disc wheels 1 substantially overhangthe circumferential edges of the burner flanges l2 and consequently the2 burner flames strike, play upon, and heat the wheel discs 1.

My device is provided with a removable gas manifold 20 having an outlet2| which can be connected with any suitable exhaust pipe for removingthe waste products of combustion.

I claim:

1. A method for heating articles each having an opening therethroughcomprising stacking in alternate relation a plurality of said articlesand a plurality of gas burners each having an openng therethrough and aplurality of nozzles with the openings in alignment to form a passagewaycommunicating with said nozzles, passing a combustible gaseous mixturethrough said passageway to supply said burners with a combustiblemixture and burning said gaseous mixture at the burner outlets to heatsaid articles.

2. In an apparatus for heating a plurality of articles each having anopening therethrough, a plurality of gas burners each having an openingtherethrough, and a plurality of outlets communicating with said openingin said burner, said burners being positioned in a stack with theopenings of said burners substantially aligned to form a passageway,said stack of burners being adapted to receive between the burners andin alternate relation therewith, the articles to be heated, and a sourceof a combustible gaseous mixture connected into said passageway tothereby supply a combustible mixture to the outlets of said burners.

3. A method for heating articles comprising stacking a plurality of saidarticles with a plurality of gas burners each having a hub and aplurality of burner nozzles positioned circumferentially around saidhub, positioning the burner hubs in alignment to form a passageway,passing a combustible gaseous mixture through said passageway to supplysaid burner nozzles with a combustible mixture and burning said gaseousmixture at the nozzles to heat said articles.

4. A method for heating articles comprising stacking in alternaterelation a plurality of said articles and a plurality of gas burnerseach having a hub and a plurality of burner nozzles positionedcircumferentially around said hub at a radius less than that of thearticle whereby the articles overlie the burner nozzles, positioning thegas burners and articles in alternate relation with the hubs of saidburners in substantial alignment to form a passageway, passing acombustible gaseous mixture through said passageway to supply saidburner nozzles with a combustible mixture 3 and burning said gaseousmixture at the nozzles to heat said articles.

5. In an apparatus for heating a plurality of articles each having anopening therethro-ugh, a plurality of gas burners each having an openingtherethrough and including a plurality of nozzles, said burners beingpositioned in a stack with the openings substantially aligned to form apassage- Way, said stack of burners being adapted to receive between theburners and in alternate relation therewith, the articles to be heated,means for spacing the burner nozzles from said articles, and a source ofa combustible gaseous mixture connected into said passageway to therebysupply a combustible mixture to said burners.

6. In an apparatus for heating a plurality of articles, a plurality ofgas burners each comprising a hub and a plurality of burner nozzlespositioned circumferentially about said hub, said burners being stackedwith the hubs of said burners substantially aligned to form apassageway, the said burner nozzles being in communication with saidpassageway, said stack of burners being adapted to receive between theburners and in alternate relation therewith, the articles to be heated,and a source of combustible gaseous mixture connected into saidpassageway to thereby supply a combustible mixture to said burners.

7. In an apparatus for heating, a plurality of metal discs, a pluralityof gas burners each comprising a hub and a hollow disc secured thereto,said burner disc having a plurality of nozzles circumferentially spacedabout said hub, the said burners being positioned with the hubs of theburners contacting and aligned to form a pas.

sageway, said burners being adapted to receive therebetween in alternaterelation the articles to be heated, and a source of combustible gaseousmixture connected into said passageway to thereby supply a combustiblemixture to said burner nozzles.

8. The combination as set forth in claim '7 wherein the metal discsoverhang the burner nozzles and wherein the burner nozzles are incommunication through the hollow disc portion of the burner with thesaid passageway.

9. In an apparatus for heating, a plurality of metal discs each having acentral opening therethrough, a, plurality of gas burners each having acentral opening therethrough, a plurality of spacer rings, said burnersand spacer rings being positioned in alternate contacting relation withthe openings substantially aligned to form a central passageway, saidburners being adapted to receive therebetween in alternate relation thesaid metal discs with the central openings of said discs aligned andconcentric with said central passageway, and a source of a combustiblegaseous mixture connected into said passageway to thereby supply acombustible mixture to said burners.

10. In an apparatus for heating a plurality of metal discs each having acentral opening, a plurality of gas burners each having a centralopening, and a plurality of burner nozzles positioned circumferentiallyabout and in communication with the opening in said burner, said burnersbeing stacked one upon the other, means for spacing the nozzles of eachburner from the nozzles of the adjacent burner, said burners beingpositioned with the central openings substantially aligned to form apassageway, said burners being adapted to receive there-between inalternate relation the said metal discs with the central openings ofsaid discs aligned and concentric with said central passageway a sourceof combustible gaseous mixture connected into said passageway to therebysupply a combustible mixture to said burners, and means for closing atleast one end of said passageway.

11. In an apparatus for heating a plurality of articles each having anopening therethrough, a

plurality of burners each having an opening therethrough and arranged ina stack with the openings aligned to form a passageway, a plurality ofoutlets on said burners communicating with said passage-way, and meanssurrounding the openings in said burners and spacing said burners aparta distance greater than the height of said articles, said spacing meansbeing adapted to be received within the openings in said articles,whereby said articles may be positioned over said spacing means betweenadjacent burners and heated by a combustible gaseous mixture introducedinto said passageway and burned at said outlet.

12. In a heating apparatus, a plurality of burners each having anopening therethrough, said burners being arranged in a stack with theopenings aligned to form a passageway, a plurality of nozzles on saidburners spaced circumferentially of said openings and communicating withsaid passageway, means spacing said burners apart whereby a plurality ofapertured articles may each be positioned between a pair of adjacentburners with the apertures surrounding the passageway formed by saidopenings, and a source of combustible gaseous mixture connected withsaid passageway for supplying a combustible mixture to said nozzles.

DONALD C. CAMPION, Se.

REFERENCES CITED The following references are of record in the file ofthis patent:

Certificate of Correction Patent No. 2,465,511. March 29, 1949. DONALDC. CAMPION, SR.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows:

zZColumn 2, lines 17 and 18, claim 1, for the Words the burner outletsread said n02 es;

and that the said Letters Patent should be read with this correctiontherein that the same may conform to the record of the case in thePatent Ofi'ice.

Signed and sealed this 2nd day of August, A. D. 1949.

THOMAS F. MURPHY,

Assistant Commissioner of Patents.

